Variability of Chroococcus (Cyanobacteria) morphospecies with regard to phylogenetic relationships

0351914 - BC 2011 RIV NL eng J - Journal Article
Komárková, Jaroslava - Jezberová, Jitka - Komárek, Ondřej - Zapomělová, Eliška
Variability of Chroococcus (Cyanobacteria) morphospecies with regard to phylogenetic relationships.
Hydrobiologia. Roč. 639, č. 1 (2010), s. 69-83. ISSN 0018-8158. E-ISSN 1573-5117.
[Workshop of the International Association of Phytoplankton Taxonomy and Ecology /15./. Ramot, 23.10.2008-30.10.2008]
R&D Projects: GA ČR(CZ) GA206/09/0309; GA ČR(CZ) GA206/07/0917
Institutional research plan: CEZ:AV0Z60170517; CEZ:AV0Z50200510
Keywords : morphological variability * Cyanobacteria * reservoirs
Subject RIV: DA - Hydrology ; Limnology
Impact factor: 1.964, year: 2010

Morphological variability of seven monoclonal populations of the planktonic coccoid genus Chroococcus, isolated mostly from reservoirs, fishponds and littoral substrata from localities in the Czech and Slovak Republics, but occurred all over the world, were studied experimentally under various combinations of nutrient concentration, light intensity, temperature, and water movement. Four clusters of ten studied strains designed originally as species of the genus Chroococcus were distinguished in the Neighbor Joining phylogeny tree based on 16S rRNA gene sequences. Cell morphology and the formation of colonies studied in experiments verified the existence of these four clusters. One of them verified a distant generic position of the genus Limnococcus, which could not be classified to the genus Chroococcus and was established as an independent genus.
Permanent Link: http://hdl.handle.net/11104/0191549